Heat treating apparatus and process for crankshafts

Claim 1

IN AN APPARATUS FOR HEATING THE BEARINGS OF A CRANKSHAFT, MEANS SUPPORTING SAID CRANKSHAFT FOR ROTATION OF SAID CRANKSHAFT ABOUT THE AXIS OF ROTATION THEREOF, AN INDUCTOR CARRIAGE CARRIED FOR MOVEMENT ALONG A LINE PARALLEL TO THE AXIS OF ROTATION OF SAID CRANKSHAFT, AN INDUCTOR ASSEMBLY CARRIED ON SAID INDUCTOR CARRIAGE AND MANUALLY MOVABLE TO ENGAGE GHE ONE OF SAID BEARINGS OF SAID CRANKSHAFT OPPOSITE OF WHICH SAID INDUCTOR CARRIAGE IS SELECTIVELY POSITIONED, A FIXED MEMBER CARRIED PARALLEL TO THE AXIS OF ROTATION OF SAID CRANKSHAFT, A PLURALITY OF NOTCHES FORMED IN SAID FIXED MEMBER, EACH OF SAID NOTCHES BEING POSITIONED OPPOSITE ONE OF SAID BEARINGS, DETENT MEANS CARRIED ON SAID INDUCTOR CARRIAGE AND ADAPTED TO ENGAGE ANY SELECTED ONE OF SAID NOTCHES TO ACCURATELY POSITION SAID INDUCTOR CARRIAGE OPPOSITE A SELECTED ONE OF SAID BEARINGS, A PLURALITY OF SWITCHES, EACH OF SAID SWITCHES CARRIED ON SAID FIXED MEMBER IN COOPERATION WITH ONE OF SAID NOTCHES, MEANS CARRIED ON SAID DETENT MEANS FOR OPERATING ONE OF SAID SWITCHES WHEN SAID DETENT MEANS ENGAGES THE NOTCH IN COOPERATION THEREWITH, POWER MEANS FOR SAID INDUCTOR ASSEMBLY, AND CIRCUIT MEANS CONNECTING SAID PLURALITY OF SWITCHES TO SAID POWER MEANS AND OPERATING TO PREVENT THE APPLICATION OF SAID POWER MEANS TO SAID INDUCTOR ASSEMBLY WHEN SAID INDUCTOR CARRIAGE IS NOT ACCURATELY POSITIONED OPPOSITE THE SELECTED ONE OF SAID BEARINGS.